Преобразуйте следующие предложения в форму множественного числа.
1. This is a child.
2. This isn't a baby.
3. This is a sheep.
4. That isn't a path.
5. This is a stranger.
6. This isn't a mouse.
7. Is this a man?
8. That is a doctor.
9. Is that a teacher?
10. That isn't a lamb.
11. This is a fish.
12. That isn't an atlas.
13. That is a leaf.
14. This isn't a camera.
15. This is a half.